Weather in September
September arrives as a jarring reminder of the impending winter in
Raahe,
Finland. Daylight averages reduce notably to 13.1 hours daily. Importantly, September sees a significant drop in sea temperatures from 16.2°C (61.2°F) down to 12.7°C (54.9°F). As evidenced by the drastic drop in sea temperatures and daylight hours, autumn proceeds to set in. With the changing hues of nature, September brings the first whispers of a forthcoming fall.
Sea temperature
In Raahe, the average seawater temperature in September is 12.7°C (54.9°F).
Note: Swimming in 12.7°C (54.9°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation.
Daylight
The average length of the day in September in Raahe, Finland, is 13h and 3min.
On the first day of the month, sunrise is at 06:04 and sunset at 20:39. On the last day of September, in Raahe, Finland, sunrise is at 07:30 and sunset at 18:53 EEST.
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